For those of you who have PSPs still (and come on if you're reading this thread...) I'm sure a lot of you know this already but thought I'd put it out there:
This official PS Move Charging Station happens to include a 5v 1500mA AC adapter. It should sound familiar as that's the same specs as the PSP 3000 charger - it fits in the PSP too.
I found some for $4.99 "used" but clearly they were just getting rid of old brand new stock as it had its original packaging. It's a great way to get cheap PSP chargers!
Nice find! The PSP 2k and 3k can charge via their mini USB ports, too, but only if they have enough battery charge to recognize it's plugged in, ironically. When the battery is truly dead you have to charge via the charge port. I've had a 2000 unit since 2008 and still occasionally play it. I use a 3rd party USB charge cable that has a dual charger plug and mini USB plug in the end.
Good find on the deals, OP!